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Give the formulae of compound formed fro...

Give the formulae of compound formed from the following sets of elements : calcium and nitrogen

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The important types of ores of metals are:
1. Oxide ores : Haematite `(Fe_(2)O_(3))`, Bauxite (`Al_(2)O_(3).2H_(2)O`) and Magnetite (`Fe3O_(4)`)
2. Carbonate ores : Limestone (`CaCO_(3)`), Siderite (`FeCO_(3)`) and Calamine (`ZnCO_(3)`)
3. Sulphide ores: Copper pyrites (`CuFeS_(2)`), Iron pyrites (FeS), Zinc blende (ZnS) and Cinnabar (HgS).
4. Halide ores (Chloride and Fluoride, ores): Rock salt (NaCl), Horn silver (AgCl) and Fluorspar (`CaF_(2)`)
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SWAN PUBLICATION-METALS AND NON METALS-ADDITIONAL IMPORTANT QUESTIONS ( Short Answer Type Questions )
  1. Name various steps involved in the extraction of a metal from its ore?

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  2. What is alkali? Give examples.

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  3. Show by means of equations that zinc is more reactive then copper.

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  4. What is corrosion? What are the different ways to reduce corrosion?

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  5. Give reaction of Aluminium oxide with acid and base.

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  6. Which of the following gas is released when a metal react with acids?

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  7. Give the formulae of compound formed from the following sets of elemen...

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  8. What is a thermite reaction?

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  9. Fill in the blanks- The organisms which feed on dead plants and animal...

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  10. Draw electron dot structure of magnesium and potassium.

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  11. Show formation of K(2)O and MgO by transfer of electrons.

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  12. Name the ions present in compounds Na(2)O and MgO and symbolise them.

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  13. Explain in brief- Forests maintain the oxygen-carbon dioxide balance.

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  14. Write down the names of compounds represented by the following formula...

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  15. Write down the names of compounds represented by the following formula...

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  16. Write down the names of compounds represented by the following formula...

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  17. Write down the names of compounds represented by the following formula...

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  18. Mention any four products forests provide us?

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  19. Write down the names of compounds represented by the following formula...

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  20. The main components of photosynthesis are-

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